INDIANAPOLIS - As the skill position players prepare to take their shot at breaking the 40-yard dash record Sunday in the most anticipated annual event at the Scouting Combine, confusion continues to permeate the instant results.

NFL.com is reporting the times, first an "unofficial" clocking shortly after prospects run and later an "official" time. A source told NFLDraftScout.com that the first clocking is a hand-held time and the second comes from National Football Scouting, which conducts the event and distributes the official reports to NFL teams.

Of the 36 offensive linemen NFLDraftScout.com noted unofficial and official times for Saturday, 33 had slower times in the official listing, three were the same and none were listed as faster than their unofficial timing. Sixteen players had an official time at least a tenth of a second slower than their official time, led by Georgia's Cordy Glenn, who dropped 0.19 seconds from a blistering 4.96 to a 5.15, still highly impressive for a 345-pound man.

However, that's still not Glenn's "official" time.

Those who participate in the 40 run twice, and on each run they are timed by two hand-held stopwatches and one electronic timer (that is actually initiated by hand on the player's first movement). Combine data put together for NFL teams by National Scouting includes all six of those times for each player, but no single official time.

That information isn't typically known for a week or two following the conclusion of the Combine, and it's not known what number is being provided to the NFL Network and NFL.com during the event.

It's an important asterisk to consider when the speedsters take the field at Lucas Oil Stadium on Sunday.

While Chris Johnson is widely reported to hold the Combine "record" in the 40-yard dash, documented data by NFLDraftScout.com shows Trindon Holliday's 4.21 in 2010 to be the fastest clocking since 2000 (Johnson ran a 4.24 in 2008). The fastest verifiable time in Combine history was a 4.12 by Bo Jackson in 1986 on manual stopwatches in the Superdome.

Saturday's 40 action was topped by Oklahoma tight end James Hanna, who posted a 4.49, according to NFL.com. Georgia's Orson Charles, who lifted 225 pounds a staggering 35 times on Friday, chose not to run the 40.

"Yes, I'll be doing everything at the Combine. I'm looking forward to it," Kuechy told me in a phone interview this week.

Kuechly has been hard at work at the IMG Academy in Bradenton, Florida preparing for the work out since shortly after his January 6 announcement that he'd be bypassing his senior season and heading to the NFL.

Kuechly is one of 33 NFL hopefuls training in Bradenton. With him are several other potential first round prospects, including Georgia offensive lineman Cordy Glenn, Wisconsin offensive lineman Peter Konz and Rutgers wide receiver Mohamed Sanu. Kuechly elected to attend IMG partially due to recommendations from two former BC standouts who trained there last year -- offensive tackle Anthony Castonzo (the Indianapolis Colts' first round pick last April) and outside linebacker Mark Herzlich (New York Giants).

The Boston College product told me that he's primarily been working on speed and explosiveness drills in preparation for the Combine and is currently measuring in at 6-3 and 240 pounds.

MOBILE, Ala. -- It might seem silly to think that lasting impressions can be made on scouts when athletes strut on stage for the weigh-ins prior to various all-star games but talent evaluators can take a lot from the height, weight, hand size, arm length, and general build of the athletes.

Each football position carries with it certain ideal measurements. This, of course, does not mean that players can't be successful in the NFL despite being shorter, heavier or physically less impressive than expected. It does, however, give scouts an idea as to where a prospect might project in the pros, as well as his dedication to the weight-room, etc.

At no all-star game is this more important, of course, than the Senior Bowl, the most prestigious and talent-filled all-star game in college football.

The Senior Bowl weigh-in took place this morning and there were some surprises.

First, there were a few players unable to attend the game. Of the notables is Baylor wide receiver Kendall Wright and Penn State defensive tackle Devon Still. Wright suffered an ankle injury and was unable to attend. Still is nursing a sprained big toe.

Clemson defensive end Andre Branch is scheduled to play in the game but was not yet in Mobile this morning to be measured. There was only one addition to the roster so far, Arkansas State outside linebacker Demario Davis was not yet in Mobile but was announced as a player coming in to participate. Davis is NFLDraftScout.com's No. 23 rated outside linebacker for the 2012 draft.

Quick, in fact, was one of the more physically impressive players on either roster. He measured in at 6-3 (1/2) and a rock-solid 222 pounds. His 33 1/2 inch arms were only slighter shorter than North Carolina'sDwight Jones (33 5/8) and Texas A&M's Jeff Fuller (34 1/8) -- two receivers who have generated a great deal more national attention than Quick.

The most impressive builds of the day were sported by Utah State inside linebacker Bobby Wagner (6-0 and a 1/4, 241 pounds), Boise State running back Doug Martin (5-09, 219), Michigan defensive tacke Mike Martin (6-1 and a 1/2, 307 pounds) and Florida State linebacker Nigel Bradham (6-1 and 5/8, 237 pounds).

With some prospects impressing with their athletic frames, there will naturally be some disappointments. It is worth repeating that the NFL is full of prospects who appeared too small, too heavy or too thin in shorts only to prove Pro-Bowlers on the field. Still, the relatively soft builds for Washington running back Chris Polk, Alabama center William Vlachos, Boise State defensive lineman Billy Winn and Marshall defensive end Vinny Curry were a bit surprising. So too was the fact that North Carolina defensive end Quinton Coples, NFLDraftScout.com's top-rated prospect in Mobile for this game, measured in lighter than expected at 281 pounds. Coples measured in at just under 6-6 (6-5, 3/4") and had been listed by the Tar Heels at 285 pounds and some expected him to measure closer to 295. Clearly, Coples is attempting to prove he's lean and athletic enough to remain at defensive end rather than move back inside to defensive tackle.

Following the player weigh-ins is the first practice of the week. On every day of the week the North and South teams will alternate practicing at Ladd-Peebles Stadium in Mobile per day. Today, however, the North team will practice at Ladd-Peebles whereas the South team will be practicing simultaneously in nearby Fairhope.

"Yes, I'm going to be here," Washington said emphatically, adding "because I see the change in the program, I see the change in the kids and I see how everybody's buying in."

Washington hadn't received the national attention of a David DeCastro (Stanford) or a Cordy Glenn (Georgia), but like these two men, he was being projected as a possible first round pick. Washington claims that he may not even submit his name for a grade from the NFL Advisory Committee because he is so firm with his decision. He cited the fact that in returning to school, he'd be on pace to graduate -- an accomplishment that no one in his family had previously been able to do.

Though Washington played well outside at tackle, most project him back inside at guard in the NFL. Washington has a short, stock build. He is surprisingly light on his feet and plays with intensity and physicality. The feeling among scouts is that Washington could play outside at the next level, but he could become a Pro Bowl caliber guard.

While a loss for NFL teams needing help up front, the decision is a coup for Al Golden's Hurricanes. Washington will return as Miami's most experienced offensive lineman. An All-ACC pick as a sophomore at guard, Washington was moved outside to left tackle to replace Seantrel Henderson, who went down to a back injury. Considering the skill-position talent usually brewing at Miami, having two NFL-caliber offensive linemen in Henderson and Washinton next season could be just the boost this team needs after a year rocked by scandal and disappointing results on the field.

Each Friday I list my "Five prospects" that I'll be focusing on for the upcoming weekend. In reality, I'm focusing on dozens of prospects each week, but the players listed below are playing in high profile games and against the caliber of competition that I believe provides us with an opportunity to truly assess how a collegiate player might fare when asked to make the huge jump to the NFL.

Typically I focus on senior prospects in this space. However, with it becoming more and more obvious as to which underclassmen are considering the jump to the pros, I'll be incorporating a few more juniors and redshirt sophomores in the coming weeks.

Sometimes it also leads to the player being featured in Draft Slant , NFLDraftScout.com and CBSSports.com's weekly NFL Draft preview. In each PDF issue of Draft Slant Senior Analyst Chad Reuter breaks down six more players in Filmroom Notes, updates our Top 64 prospects overall and offers extensive previews of the next week's action. Here is the link to this week's issue of Draft Slant. Or for the entire season click this link . Looking for a specific week? Download past issues from the past three yearshere.

Without any further adieu, here are the five prospects, as well as the cable provider and time you can expect to see them.RB Vick Ballard, Mississippi State: Ballard served notice immediately against Memphis last week (career-high 166 yards and three TDs) that his first season for the Bulldogs (994 yards, 19 TDs) was no fluke after transferring from Mississippi Gulf Coast Community College. The sledding will be tougher Saturday against the defending champion Auburn Tigers, which survived a scare last week from Utah State. Ballard has good size (5-11, 220) and power, but still has to answer concerns about his speed. This game begins at 12:20 pm ET and will be televised by ESPN3 and The SEC Network.

DT Devon Still, Penn State: At 6-4, 310 pounds, Still has the size scouts are looking for and he's shown flashes of dominant ability throughout his career. Still hasn't yet shown the consistency, however, to warrant the hype he's received, however. A strong performance against Alabama Saturday and their potential All-SEC center William Vlachos, himself a late round NFL possibility, would go a long way in boosting Still's stock. This game begins at 3:30 pm ET and will be televised by ABC.

OT/OG Cordy Glenn, Georgia: A dominant guard throughout much of his career with the Bulldogs, Glenn was asked to move outside to left tackle against an experienced and athletic Boise State defensive front last week and not surprisingly struggled. At 6-5, 345 pounds, Glenn may simply lack the quick feet and balance to remain outside. As I pointed out in my "Big Board," however, I am not willing to move him out of my Top 32 after one poor performance. As good as the Boise front four was, Glenn and the Bulldogs are in for an even tougher test tomorrow against South Carolina's pass rushers. The Gamecocks boast two of the better rushers in the conference in senior Melvin Ingram and rising junior Devin Taylor, who also has a place on my Top 32. I'm looking forward to all of this weekend's games, but from a scouting standpoint, this is the one to focus on. This game begins at 4:30 ET and will be televised by ESPN.

DE Alex Okafor, Texas: Like Still for the Nittany Lions, Okafor has generated more press than production early in his career. It is important to note that unlike Still, Okafor is only a junior and he was miscast last season as a defensive tackle. This season, the 6-4, 260 pounder is back outside rushing the passer. Okafor only registered two tackles last week against Rice, though one of them was a tackle for loss. Okafor will have plenty of opportunities to rush the quarterback against BYU Saturday. The Cougars could give Okafor and the Longhorns more than they bargained for, however, as they are coming off an impressive win last week at Mississippi. This game begins at 7 pm ET and will be televised by ESPN2.

ILB Manti Te'o, Notre Dame: Some believe Te'o will prove to be the first Notre Dame defender to be drafted in the first round since Renaldo Wynn (1997). What is very clear is that Te'o is an instinctive, physical defender very capable of dictating the action in the middle. Against an athletic and versatile Michigan offense, however, Te'o speed to the flanks will be tested. Considering that he finished with 133 tackles last year -- the most from any Irish defender since 1983 -- it wasn't surprising that Te'o led Notre Dame last week against South Florida with nine stops. He'll have to be even better this week if Brian Kelly's group is to get into the win column. This game begins at 8:00 pm EST and will be televised by ESPN.